#include "vncclient.h"
#include <QTcpSocket>
#include <QTimer>
#include <QPainter>

VncClient::VncClient(QObject *parent)
    : Protocol(parent)
    , socket(new QTcpSocket(this))
    , updateTimer(new QTimer(this))
    , majorVersion(0)
    , minorVersion(0)
    , framebufferWidth(0)
    , framebufferHeight(0)
{
    // 连接信号和槽
    connect(socket, &QTcpSocket::connected, this, &VncClient::onConnected);
    connect(socket, &QTcpSocket::disconnected, this, &VncClient::onDisconnected);
    connect(socket, QOverload<QAbstractSocket::SocketError>::of(&QTcpSocket::error),
            this, &VncClient::onError);
    connect(socket, &QTcpSocket::readyRead, this, &VncClient::onReadyRead);
    
    // 初始化帧缓冲区
    framebuffer = QImage(1920, 1080, QImage::Format_RGB32);
    framebuffer.fill(Qt::darkBlue);
}

VncClient::~VncClient()
{
    disconnectFromHost();
}

bool VncClient::connectToHost(const QString &host, int port, const QString &password)
{
    this->host = host;
    this->port = port;
    this->password = password;
    
    // 连接到服务器
    socket->connectToHost(host, port);
    return true;
}

void VncClient::disconnectFromHost()
{
    if (socket->state() == QAbstractSocket::ConnectedState) {
        socket->disconnectFromHost();
    }
}

QImage VncClient::getDesktopImage() const
{
    return framebuffer;
}

void VncClient::sendMouseEvent(const QPoint &pos, Qt::MouseButton button, bool pressed)
{
    // 实现VNC鼠标事件发送
    // 这里是简化实现，实际需要按照RFB协议格式发送数据
    Q_UNUSED(pos)
    Q_UNUSED(button)
    Q_UNUSED(pressed)
}

void VncClient::sendKeyEvent(int key, bool pressed)
{
    // 实现VNC键盘事件发送
    // 这里是简化实现，实际需要按照RFB协议格式发送数据
    Q_UNUSED(key)
    Q_UNUSED(pressed)
}

void VncClient::sendText(const QString &text)
{
    // 实现文本发送
    Q_UNUSED(text)
}

void VncClient::requestFrame(const QRect &region)
{
    // 请求更新帧缓冲区的特定区域
    Q_UNUSED(region)
}

QStringList VncClient::supportedFeatures() const
{
    return QStringList() << "mouse" << "keyboard" << "clipboard";
}

bool VncClient::hasFeature(const QString &feature) const
{
    return supportedFeatures().contains(feature);
}

void VncClient::onConnected()
{
    // 连接成功
    isConnected = true;
    emit connected();
    initializeConnection();
}

void VncClient::onDisconnected()
{
    // 连接断开
    isConnected = false;
    emit disconnected();
}

void VncClient::onError(QAbstractSocket::SocketError socketError)
{
    // 处理连接错误
    Q_UNUSED(socketError)
    isConnected = false;
    emit connectionError(socket->errorString());
}

void VncClient::onReadyRead()
{
    // 处理接收到的数据
    // 这里应该解析RFB协议数据
}

void VncClient::initializeConnection()
{
    // 初始化VNC连接
    // 发送协议版本信息等
}

void VncClient::handleHandshake()
{
    // 处理握手过程
}

void VncClient::handleSecurity()
{
    // 处理安全认证
}

void VncClient::handleInitialization()
{
    // 处理初始化过程
}

void VncClient::sendData(const QByteArray &data)
{
    // 发送数据到服务器
    socket->write(data);
}

QByteArray VncClient::receiveData(int size)
{
    // 从服务器接收指定大小的数据
    return socket->read(size);
}